The paper nautilus or argonaut, a cuttlefish.

Argonaut

The paper nautilus or argonaut, a cuttlefish.

A modern Bryozoan, a group of cells or zooecia seen from above, and a single cell seen from the side.

Bryozoan

A modern Bryozoan, a group of cells or zooecia seen from above, and a single cell seen from the side.

A modern Bryozoan, a single zooid expanded.

Bryozoan

A modern Bryozoan, a single zooid expanded.

A modern Bryozoan, a cluster of branches.

Bryozoan

A modern Bryozoan, a cluster of branches.

A modern Bryozoan, a single branch bearing ovicells and zooid cells.

Bryozoan

A modern Bryozoan, a single branch bearing ovicells and zooid cells.

Eschara elegans (Coscinopleura) is a prehistoric bryozoan, a marine animal similar to a coral.

Prehistoric Bryozoan

Eschara elegans (Coscinopleura) is a prehistoric bryozoan, a marine animal similar to a coral.

Eschara philomela is a prehistoric bryozoan, a marine animal similar to a coral.

Prehistoric Bryozoan

Eschara philomela is a prehistoric bryozoan, a marine animal similar to a coral.

Eriphia laevimana is a crustacean in the Cancridae family of crabs.

Crab

Eriphia laevimana is a crustacean in the Cancridae family of crabs.

The edible crab (Cancer pagurus) is a species of crab found in the North Sea, North Atlantic, and the Mediterranean Sea.

Edible Crab

The edible crab (Cancer pagurus) is a species of crab found in the North Sea, North Atlantic, and the…

Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class. Despite their name, cuttlefish are not fish but molluscs. Cuttlefish have an internal shell (cuttlebone), large W-shaped pupils, and eight arms and two tentacles furnished with denticulated suckers, with which they secure their prey.

Cuttlefish

Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class. Despite their…

The Common Cuttlefish (Sepia officinalis) is a mollusc in the Sepiidae family of cephalopods.

Common Cuttlefish

The Common Cuttlefish (Sepia officinalis) is a mollusc in the Sepiidae family of cephalopods.

Risso's Dolphin is the only species in the Genus Grampus. It is also known as Cuvier's whale or Gray Grampus.

Risso's Dolphin

Risso's Dolphin is the only species in the Genus Grampus. It is also known as Cuvier's whale or Gray…

Eucope diaphana is a species of marine animal in the order Anthomedusae.

Eucope

Eucope diaphana is a species of marine animal in the order Anthomedusae.

Eudendrium cochleatum is a hydrozoan marine animal in the Eudendriidae family.

Eudendrium

Eudendrium cochleatum is a hydrozoan marine animal in the Eudendriidae family.

The gars, or garpikes, are members of the Lepisosteiformes (or Semionotiformes), an ancient order of "primitive" ray-finned fish. Fossil gars are found in Europe, South America, and North America, indicating that in times past these fish had a wider distribution than they do today. Gars are considered to be a remnant of a group of rather primitive bony fish that flourished in the Mesozoic, and are most closely related to the bowfin, another archaic fish now found only in North America.

Garpikes Fish

The gars, or garpikes, are members of the Lepisosteiformes (or Semionotiformes), an ancient order of…

The spotted Gar (Lepisosteus oculatus) is a primitive freshwater fish of the family Lepisosteidae, native to North America from the Lake Erie and southern Lake Michigan drainages south through the Mississippi River basin to Gulf Slope drainages, from lower Apalachicola River in Florida to Nueces River in Texas, USA. It has a profusion of dark spots on the body, head and fins. It occurs in quiet, clear pools and backwaters of lowland creeks, small to large rivers, oxbow lakes, swamps and sloughs. It occasionally enters brackish waters. The fish is a voracious predator feeding on various kinds of fishes and crustaceans. They are notable for being one of the few extant fish species with ganoid scales.

Garpikes Fish

The spotted Gar (Lepisosteus oculatus) is a primitive freshwater fish of the family Lepisosteidae, native…

This hermit crab (Eupagurus bernhardus) is in the shell of the northern moon snail (Lunatia heros).

Hermit Crab

This hermit crab (Eupagurus bernhardus) is in the shell of the northern moon snail (Lunatia heros).

The lobster, a crustacean.

Lobster

The lobster, a crustacean.

Flounder have both eyes situated on one side of the head, they are not born this way. Their life involves metamorphosis. During metamorphosis, one eye migrates to the other side of the body so that both eyes are situated on the upward-facing side of its body. After metamorphosis, flounder lie on one side on the ocean floor; either the left or right side might face upward depending on the species. This is the different stages of the flounder. Note the eyes in the young flounder are arranged one on each side of the head.

Metamorphosis of a Flounder

Flounder have both eyes situated on one side of the head, they are not born this way. Their life involves…

Graneledone verrucosa is a species of cephalopods in the Octopodidae family of octopuses.

Octopus

Graneledone verrucosa is a species of cephalopods in the Octopodidae family of octopuses.

The Common Eagle Ray (Myliobatis aquila) is large ray in the Chondrichthyes class of cartilaginous fishes.

Eagle Ray

The Common Eagle Ray (Myliobatis aquila) is large ray in the Chondrichthyes class of cartilaginous fishes.

The scallop (Hinnites pusio) is a marine bivalve mollusk from the Pectinidae family.

Scallop

The scallop (Hinnites pusio) is a marine bivalve mollusk from the Pectinidae family.

Scaphander lignarius is a species of gastropods in the Scaphandridae family.

Scaphander

Scaphander lignarius is a species of gastropods in the Scaphandridae family.

Scaphites equalis is a species of extinct cephalopods that thrived during the Cretaceous period.

Scaphites

Scaphites equalis is a species of extinct cephalopods that thrived during the Cretaceous period.

The spotted scat (Scatophagus argus) is a small fish native to the western Pacific Ocean.

Spotted Scat

The spotted scat (Scatophagus argus) is a small fish native to the western Pacific Ocean.

Scissurella crispata is a species of small sea snails in the Scissurellidae family.

Scissurella

Scissurella crispata is a species of small sea snails in the Scissurellidae family.

Edwardsia beautempsi is a species of sea anemone that lives freely in tubes in the sand, unattached.

Sea Anemone

Edwardsia beautempsi is a species of sea anemone that lives freely in tubes in the sand, unattached.

"A gastropod of the family Ovulidae and genus Radius, as R. volva, of long fusiform shape, the ends of the lips being greatly drawn out; so called from the resemblance to a weavers' shuttle." -Whitney, 1911

Shuttle Shell

"A gastropod of the family Ovulidae and genus Radius, as R. volva, of long fusiform shape, the ends…

The Sea Snake (Pelamis bicolor) is a tropical sea snake known for its black color on top and yellow belly.

Sea Snake

The Sea Snake (Pelamis bicolor) is a tropical sea snake known for its black color on top and yellow…

Echiurus gaertneri is a species of spoon worm considered annelids, though they are not segmented.

Spoon Worm

Echiurus gaertneri is a species of spoon worm considered annelids, though they are not segmented.

The green turtle (Chelonia mydas) is a large sea turtle and the only member of the species Chelonia.

Green Turtle

The green turtle (Chelonia mydas) is a large sea turtle and the only member of the species Chelonia.

The Hawaiian Rock Urchin (Echinometra oblongata) is a sea urchin, here "with spines in part removed to show the plates of the test." -Whitney, 1911

Hawaiian Rock Urchin

The Hawaiian Rock Urchin (Echinometra oblongata) is a sea urchin, here "with spines in part removed…